Stave-machine



(No Model.) 2 Sheets---Sheet 1 P. FLANDERS.

STAVE MACHINE.

Patented Jan. 16,1883.

N. PEPERS. Phum-Ln 2 Sheets- Sheet 2,

7 P. F-LANDERS.

v (No Model.)

'STAVE MACHINE.

Patented Jan. 16,1883.

Wain/we" 6/6.

l UNITED STATES PATENT OFFICE.

PETER FLANDERS, OF LOWELL, MASSACHUSETTS.

STAVEL-MACHINE.

SPECIFICATION forming part of Letters Patent No. 270,772, dated January16, 1883. Application filed April 10,1 882. (No model.)

- machines in which concave and convex cutters are employ ed to dressthe outer and innersurfaces of the staves, and jointing-cutters aremoved automatically in and out while they are jointing the stave, so asto give ittherequired increase in width at the center.

The invention has for its object to provide improved mechanism formoving the jointingcutters in and out, and also to provide an improvedarrangement of feed-rolls, whereby the staves are drawn through themachine.

To these ends myinvention consistsin the improvements hereinafterdescribed and claimed. Of the accompanying drawings, forming a part ofthis specification, Figure 1 represents a top view of a stave-machineembodying my improvements. Fig. 2 represents a side elevation of thesame. Fig. 3 represents a transverse section on line 5000, Fig. 1.Figs.4,5, and 6 represent transverse sections, respectively, on lines 3y, z z, and z a, Fig. 1. Fig. 7 represents alon gitudinal section onlinez z Fig. 1.

The same letters of reference indicate the same parts in all thefigures.

In the drawings, A represents the support ing-frame of the machine,having at one end a horizontal bed, B, which is slotted longitudinallyfor the'passage of an endless chain, 0, having dogs D arranged to graspand feed forward the 'staveblanks, which are laid by the attendant onthe bed B between adjustable edge-guides E E. The chain 0 passes overdrums F G,journaled in the frame A, the drum F being positively rotatedbysuitable power.

The stave-blanks are held down as they are moved forward by the chain bya roll, H, located immediately behind the jointing-cutters I I. Thesecutters are mounted on vertical or nearly vertical arbors J J, whichhave their bearings in frames K K. These frames are pivoted at L to afixed lug, L, on the frame A, so that each frame K can oscillatelaterallyof said frame A, or in a plane at right angles to the directionof movement of the stave-blanks.

M M represent slides adapted to move laterally of the frame A insuitable guides, and having orifices N N,.through which the arbors J Jpass. The outer ends of the slides M M are provided with adjustablecollars 0O, having slots P P, into which project cams Q Q on apositively-rotated shaft, R, which is driven by suitable connectionswith the prime motor.

The cams are so formed that when they rotate they reciprocate the slidesM Msimultaneously in opposite directions. Said slides by theirengagement with the arborsJ cause the frames K K to oscillateindependently on their pivot, and thus move the cutters I Ialternately-toward and from each other. The cutters l I are continuouslyrotated by a belt or belts applied to pulleys S S on the arbors J J, andtheir described lateral movement causes them to give the staves theusualvarying width, decreasing in both directions from the center, thelateral movements of the cuttersbeing so timed with relation to thelongitudinal movement of the stave-blanks that when the forward end of ablank comes between the cutters theywillbeattheinwardcxtremeoftheirmovement. The cutters thenmove outwardlyuntil thelongitudinal center of the blank has passed them, when theywill again move inwardly until the rear end of the blank passes thepoint where they act. Each stave, after it has been acted on by thecutters I I, is passed by a pair of feed-rolls, T T, between a rotarycutter-head, U, and a feed-roll, V. The head U has concave cutters a a,which impart a convex form to the upper surface of. the stave-blank. Be-

ing convex cutters g g, which impart a concave form to the under surfaceof the stave. The stave is thus completed, and is passed out of themachine between two feed-rolls, h i, the former having a concavityfitting the upper surface of the stave and the latter a correspondingconvexity fitting the lower surface.

It will be seen that by the provision of the concavities in thefeed-rolls b e h, and the convexity on the feed-roller t, each stave isprevented from lateral displacement, and is kept in the proper line ofmovement after passing from the first cutteruntilitleavesthe machine,there being little or no liability of the stave swinginglaterally whilein contact with either of said feed-rolls on account of the closenesswith which they fit its surface.

The cutter-heads U fare preferably driven by belts upon pulleysjj on thearbors of said heads, and the feed-rolls are preferably driven by asystem of gearing, as shown in Fig. 2.

I am aware that it is not new in stave-machines to move jointing-cuttersin and out to give the stave the required variation in Width. Hence I donot claim this feature broadly. I am not aware, however. that the arborsof the jointing-cutters have ever been journaled in frames pivoted toa-fixed support. Said construction is more simple and involveslcss wearand friction than any other ofwhich I am aware.

The collars 00011 the slides M are made adjustable on the'slides, andare held at any desired points by means of set-screws. By adjusting saidcollars the cutters II can be adapted to different widths of staves.

I claim 1. The combination of thearbors J J, having the cutters I I, thepivoted frames K K, the slides M, the positively-rotated cams Q. theadjustable collars O on the slides M, and means for positively holdingsaid collarsin any position to which they may be adjusted, and therebyadapting the cutters to staves of different widths, as set forth,

2. In a stave-machine, the combination ,of the cutter-head U, hating theconcave cutters, the cooperating straight feed-roll V, the feedrolls 1)0, one having a longitndinally-concave and the other a straightfeeding-surface, the cutter-head f, having the convex cutters g g, theco-operating feed-roll 6, having a longitudinally-concave surface, andthe feed-rolls h i, one having a longitudinally-concave and the other aconvex feeding-surface, as set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 13th day of March, A. D.1882.

PETER FLANDERS.

Witnesses O. F. BROWN, A. L. WHITE.

